CN104723576A - Forming device and forming method of continuous fiber reinforced thermoplastic resin preimpregnation sheet material - Google Patents
Forming device and forming method of continuous fiber reinforced thermoplastic resin preimpregnation sheet material Download PDFInfo
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- CN104723576A CN104723576A CN201510103153.3A CN201510103153A CN104723576A CN 104723576 A CN104723576 A CN 104723576A CN 201510103153 A CN201510103153 A CN 201510103153A CN 104723576 A CN104723576 A CN 104723576A
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Abstract
The invention discloses a forming device and a forming method of a continuous fiber reinforced thermoplastic resin preimpregnation sheet material. The forming device comprises a creel, a fiber pre-dispersing device, a single-screw extruder, a screw-type smelting immersing mold, a secondary rolling device, a cooling traction machine and a coiling machine; 1 to 3 screw immersing rolls are arranged in the screw-type smelting immersing mold, a screw groove is formed in the outer surface of each screw immersing roll, and each screw immersing roll is driven by a motor to rotate in the screw-type smelting immersing mold. When the screw immersing rolls rotate, resin flows along the screw groove so as to immerse the fiber in the longitudinal direction, due to the extrusion effect, melt can flow along the direction perpendicular to the fiber, and the transverse immersion can be realized. The continuous fiber reinforced thermoplastic resin preimpregnation sheet material prepared by utilizing the forming device is good in impregnation effect, high in impregnation efficiency and good in production stability, so that a product excellent in performance can be obtained.
Description
Technical field
The present invention relates to continuous fiber reinforced thermoplastic resin composite material, specifically, is a kind of former and method of continuous fiber reinforced thermoplastic resin preimpregnation sheet material.
Background technology
Continuous fiber reinforced thermoplastic resin is the unidirectional arrangement of a kind of fortifying fibre and its length and the isometric reinforced thermoplastic resin of goods, resin is evenly distributed between fiber, form continuous phase, with the locus of anchoring fiber, and in material internal transmitted load.It is compared with common short fiber reinforced thermoplastic resin, there is more outstanding mechanical performance, heat resistance, that resist warping performance, dimensional stability etc., thus the product of mechanical performance brilliance can be produced, as auto parts and components, electronic device, chemical industry parts etc.
There are the impregnating equipment and dipping method of preparing continuous fiber reinforced thermoplastic resin disclosed in some, the common feature of these forming methods is that impregnating equipment is more single, generally only has an impregnating unit composition, the structure of impregnating equipment is mainly jockey pulley, fiber is by alternately walking around jockey pulley, form certain cornerite, realize the dipping of fiber.But the shortcoming of these equipment is: (1) fiber alternately height to walk around the wrap angle that jockey pulley formed too little, because fiber impregnation mainly realizes dipping by coated jockey pulley mineralization pressure, wrap angle is less, and fiber impregnation effect is poorer; (2) for increasing wrap angle, must increase jockey pulley number, the increase of jockey pulley number causes impregnation mold long, and mould is longer, gathers materials more, and melt resistance is larger, affects the stability of pultrusion; (3) jockey pulley in impregnation mold is static, and fiber is passive walks around jockey pulley, and cause resistance large, the dipping effect affecting fiber and the stability extruded, be especially difficult to the dipping realizing fibre bundle horizontal direction.
Summary of the invention
The object of the invention is to overcome the technological deficiency existed in existing continuous fiber reinforced thermoplastic resin preparation method, former and the method for the continuous fiber reinforced thermoplastic resin preimpregnation sheet material that a kind of fiber dispersion impregnating effect is good, production stability is high is provided.
To achieve these goals, this invention takes following technical scheme:
The former of continuous fiber reinforced thermoplastic resin preimpregnation sheet material and a method, this former comprises successively along pultrusion direction: creel 1, fiber pre-dispersing device 2, single screw extrusion machine 3, spiral melt impregnation mould 4, secondary rolling device 5, cooling hauling machine 6 and winder 7; Spiral melt impregnation mould 4 and single screw extrusion machine 3 at right angles formula are connected, and fiber pre-dispersing device 2 is arranged between creel and spiral melt impregnation mould 4, after be followed successively by and cool hauling machine 6 and winder 7; Be furnished with 1-3 root spiral dip roll 8 in spiral melt impregnation mould 4, the outer surface of spiral dip roll 8 starts there is spiral grooves, and drives rotation in spiral melt impregnation mould 4 by motor.
Wherein, spiral dip roll 8 diameter is 60-100mm, and spacing is 120-200mm, and the groove depth of spiral grooves is 3mm, and groove width is 8mm, and pitch is 60-90mm, and the head number of spiral grooves is 1-10.
Wherein, secondary rolling device 5 is made up of four pressure rollers, and pressure roller diameter is 400mm, and four pressure rollers are L-type arrangement.
Wherein, thermoplastic resin used is polypropylene, nylon, one or more in polyurethane, and continuous fiber is glass fibre or carbon fiber.
Present invention also offers the preparation method of above-mentioned continuous fiber reinforced thermoplastic resin preimpregnation sheet material, comprise the following steps:
(1) first, continuous tow 9, from the dispersion roller alternately walking around fiber pre-dispersing device 2 after creel 1 is drawn, is tentatively disperseed under the tension force effect of dispersion roller;
(2) continuous tow 9 enters spiral melt impregnation mould 4 after pre-dispersed, and arrange along the spiral grooves on spiral melt impregnation mould 4 inside spin dip roll 8 surface, simultaneously, thermoplastic resin enters spiral melt impregnation mould 4 after single screw extrusion machine 3 melting, continuous tow 9 cooling hauling machine 6 traction under, along the spiral grooves pultrusion on spiral dip roll 8 surface; When spiral dip roll 8 rotates, resin melt flows along spiral grooves, and realize fiber longitudinal direction dipping, simultaneously due to squeezing action, resin melt flows along the direction of vertical fibers, realizes fiber laterally dipping;
(3) continuous fiber enters secondary rolling device 5 after spiral melt impregnation mould 4 pulls out, and alternately walk around the pressure roller of secondary rolling device 5, under pressure, thermoplastic resin is overstock at fibre bundle inner, make fiber and thermoplastic resin reach fine and close to combine, improve the dipping effect of fiber;
(4) the continuous fibre after secondary rolling device 4 roll-in strengthens thermoplastic resin and fully cools through cooling hauling machine 6, then by winder 7 rolling, can prepare continuous fiber reinforced thermoplastic resin preimpregnation sheet material.
Compared with prior art, the present invention has the following advantages:
(1) spiral melt impregnation mould carries out fiber dispersion and dipping by spiral dip roll, spiral dip roll surface offers multi-head spiral groove, fiber is around spiral grooves arrangement and trend, wrap angle passes through helical angle and the pitch control of spiral grooves, a spiral dip roll can realize larger wrap angle, thus compared with the abundant dipping that can realize fiber in short distance, greatly shorten die length;
(2) because spiral melt impregnation mould is shorter, the melt assembled in mould is less, and melt resistance is little, and fiber is not easy fracture of wire, significantly can improve the stability of pultrusion;
(3) spiral dip roll is driven can be turned in spiral melt impregnation mould inward turning by motor, when spiral dip roll rotates, resin flows along spiral grooves, realize fiber longitudinal direction dipping, simultaneously due to squeezing action, melt, along the flowing of vertical fibers direction, realizes laterally dipping, flooded by vertical and horizontal, significantly can improve the dipping effect of fiber.
Accompanying drawing explanation
Fig. 1 is the top view of continuous fiber reinforced thermoplastic resin preimpregnation sheet molding equipment of the present invention;
Fig. 2 is the structural representation of spiral dip roll of the present invention;
Fig. 3 is secondary rolling device pressure roller schematic layout pattern of the present invention.
Wherein: 1-creel; 2-fiber pre-dispersing device; 3-single screw extrusion machine; The spiral melt impregnation mould of 4-; 5-bis-rolling devices; 6-cools hauling machine; 7-winder; 8-spiral dip roll; 9-continuous tow.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
According to the former of continuous fiber reinforced thermoplastic resin preimpregnation sheet material of the present invention, comprise successively along pultrusion direction: creel 1, fiber pre-dispersing device 2, single screw extrusion machine 3, spiral melt impregnation mould 4, secondary rolling device 5, cooling hauling machine 6 and winder 7; Spiral melt impregnation mould 4 and single screw extrusion machine 3 at right angles formula are connected, and fiber pre-dispersing device 2 is arranged between creel and spiral melt impregnation mould 4, after be followed successively by and cool hauling machine 6 and winder 7; Be furnished with 1 spiral dip roll 8 in spiral melt impregnation mould 4, the outer surface of spiral dip roll 8 starts there is spiral grooves, and drives rotation in spiral melt impregnation mould 4 by motor.
Spiral dip roll 8 diameter is 60mm, and spacing is 120mm, and spiral grooves groove depth is 3mm, and groove width is 8mm, and pitch is 60mm, and the head number of spiral grooves is 3; Secondary rolling device 5 is made up of four pressure rollers, and pressure roller diameter is 400mm, and four pressure rollers are L-type arrangement.
Thermoplastic resin used is nylon, and continuous fiber is carbon fiber.
Preparation method is as follows:
(1) first, continuous tow 9, from the dispersion roller alternately walking around fiber pre-dispersing device 2 after creel 1 is drawn, is tentatively disperseed under the tension force effect of dispersion roller;
(2) continuous tow 9 enters spiral melt impregnation mould 4 after pre-dispersed, and arrange along the spiral grooves on spiral melt impregnation mould 4 inside spin dip roll 8 surface, simultaneously, thermoplastic resin enters spiral melt impregnation mould 4 after single screw extrusion machine 3 melting, continuous tow 9 cooling hauling machine 6 traction under, along the spiral grooves pultrusion on spiral dip roll 8 surface; When spiral dip roll 8 rotates, resin melt flows along spiral grooves, and realize fiber longitudinal direction dipping, simultaneously due to squeezing action, resin melt flows along the direction of vertical fibers, realizes fiber laterally dipping;
(3) continuous fiber enters secondary rolling device 5 after spiral melt impregnation mould 4 pulls out, and alternately walk around the pressure roller of secondary rolling device 5, under pressure, thermoplastic resin is overstock at fibre bundle inner, make fiber and thermoplastic resin reach fine and close to combine, improve the dipping effect of fiber;
(4) the continuous fibre after secondary rolling device 5 roll-in strengthens thermoplastic resin and fully cools through cooling hauling machine 6, then by winder 7 rolling, can prepare continuous fiber reinforced thermoplastic resin preimpregnation sheet material.
The continuous fiber reinforced thermoplastic resin preimpregnation sheet material that this example is prepared, thickness is 0.32mm, hot strength 650MPa, and bending failure intensity is 550MPa, bending modulus 30GPa.
Embodiment 2
According to the former of continuous fiber reinforced thermoplastic resin preimpregnation sheet material of the present invention, comprise successively along pultrusion direction: creel 1, fiber pre-dispersing device 2, single screw extrusion machine 3, spiral melt impregnation mould 4, secondary rolling device 5, cooling hauling machine 6 and winder 7; Spiral melt impregnation mould 4 and single screw extrusion machine 3 at right angles formula are connected, and fiber pre-dispersing device 2 is arranged between creel and spiral melt impregnation mould 4, after be followed successively by and cool hauling machine 6 and winder 7; Be furnished with 3 spiral dip rolls 8 in spiral melt impregnation mould 4, the outer surface of spiral dip roll 8 starts there is spiral grooves, and drives rotation in spiral melt impregnation mould 4 by motor.
Spiral dip roll 8 diameter is 100mm, and spacing is 200mm, and the groove depth of spiral grooves is 3mm, and groove width is 8mm, and pitch is 100mm, and the head number of spiral grooves is 10; Secondary rolling device 5 is made up of four pressure rollers, and pressure roller diameter is 400mm, and four pressure rollers are L-type arrangement.
Thermoplastic resin used is polypropylene, and continuous fiber is glass fibre.
Preparation method is as follows:
(1) first, continuous tow 9, from the dispersion roller alternately walking around fiber pre-dispersing device 2 after creel 1 is drawn, is tentatively disperseed under the tension force effect of dispersion roller;
(2) continuous tow 9 enters spiral melt impregnation mould 4 after pre-dispersed, and arrange along the spiral grooves on spiral melt impregnation mould 4 inside spin dip roll 8 surface, simultaneously, thermoplastic resin enters spiral melt impregnation mould 3 after single screw extrusion machine 3 melting, continuous tow 9 cooling hauling machine 6 traction under, along the spiral grooves pultrusion on spiral dip roll 8 surface; When spiral dip roll 8 rotates, resin melt flows along spiral grooves, and realize fiber longitudinal direction dipping, simultaneously due to squeezing action, resin melt flows along the direction of vertical fibers, realizes fiber laterally dipping;
(3) continuous fiber enters secondary rolling device 5 after spiral melt impregnation mould 4 pulls out, and alternately walk around the pressure roller of secondary rolling device 5, under pressure, thermoplastic resin is overstock at fibre bundle inner, make fiber and thermoplastic resin reach fine and close to combine, improve the dipping effect of fiber;
(4) the continuous fibre after secondary rolling device 5 roll-in strengthens thermoplastic resin and fully cools through cooling hauling machine 6, then by winder 7 rolling, can prepare continuous fiber reinforced thermoplastic resin preimpregnation sheet material.
The continuous fiber reinforced thermoplastic resin preimpregnation sheet material that this example is prepared, thickness is 0.35mm, hot strength 450MPa, and bending failure intensity is 300MPa, bending modulus 20GPa.
The present invention can summarize with other the concrete form without prejudice to spirit of the present invention or principal character.Therefore, no matter from that, above-mentioned embodiment of the present invention all can only be thought explanation of the present invention and can not limit the present invention, therefore, suitable with claims of the present invention contains and any change in scope, all should think to be included in the scope of claims.
Claims (4)
1. the former of a continuous fiber reinforced thermoplastic resin preimpregnation sheet material and method, it is characterized in that, this former comprises successively along pultrusion direction: creel (1), fiber pre-dispersing device (2), single screw extrusion machine (3), spiral melt impregnation mould (4), secondary rolling device (5), cooling hauling machine (6) and winder (7); Spiral melt impregnation mould (4) and single screw extrusion machine (3) at right angles formula are connected, and fiber pre-dispersing device (2) is arranged between creel and spiral melt impregnation mould (4), after be followed successively by and cool hauling machine (6) and winder (7); Be furnished with 1-3 root spiral dip roll (8) in spiral melt impregnation mould (4), the outer surface of spiral dip roll (8) starts there is spiral grooves, and drives rotation in spiral melt impregnation mould (4) by motor.
2. according to former and the method for continuous fiber reinforced thermoplastic resin preimpregnation sheet material according to claim 1, it is characterized in that, described spiral dip roll (8) diameter is 60-100mm, spacing is 120-200mm, the groove depth of spiral grooves is 3mm, groove width is 8mm, and pitch is 60-90mm, and the head number of spiral grooves is 1-10.
3. the former of continuous fiber reinforced thermoplastic resin preimpregnation sheet material according to claim 1 and 2 and method, it is characterized in that, described secondary rolling device (5) is made up of four pressure rollers, and pressure roller diameter is 400mm, and four pressure rollers are L-type arrangement.
4. the former according to the continuous fiber reinforced thermoplastic resin preimpregnation sheet material one of claim 1-3 Suo Shu and method, it is characterized in that, thermoplastic resin used is polypropylene, nylon, one or more in polyurethane, continuous fiber is glass fibre or carbon fiber; Forming method comprises the following steps,
(1) first, continuous tow (9) alternately walks around the dispersion roller of fiber pre-dispersing device (2) after creel (1) extraction, is tentatively disperseed under the tension force effect of dispersion roller;
(2) continuous tow (9) enters spiral melt impregnation mould (4) after pre-dispersed, and arrange along the spiral grooves on spiral melt impregnation mould (4) inside spin dip roll (8) surface, simultaneously, thermoplastic resin enters spiral melt impregnation mould (4) after single screw extrusion machine (3) melting, continuous tow (9) cooling hauling machine (6) traction under, along spiral dip roll (8) surface spiral grooves pultrusion; When spiral dip roll (8) rotates, resin melt flows along spiral grooves, and realize fiber longitudinal direction dipping, simultaneously due to squeezing action, resin melt flows along the direction of vertical fibers, realizes fiber laterally dipping;
(3) continuous fiber enters secondary rolling device (5) after spiral melt impregnation mould (4) pull-out, and alternately walk around the pressure roller of secondary rolling device (5), under pressure, thermoplastic resin is overstock at fibre bundle inner, make fiber and thermoplastic resin reach fine and close to combine, improve the dipping effect of fiber;
(4) the continuous fibre after secondary rolling device (5) roll-in strengthens thermoplastic resin and fully cools through cooling hauling machine (6), then by winder (7) rolling, can prepare continuous fiber reinforced thermoplastic resin preimpregnation sheet material.
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Cited By (6)
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| CN105086422A (en) * | 2015-08-31 | 2015-11-25 | 贵州省材料产业技术研究院 | Long glass fiber reinforced TPU non-slip soles and preparation method thereof |
| CN106393742A (en) * | 2016-11-07 | 2017-02-15 | 广东亚太新材料科技有限公司 | Method for preparing thermoplastic carbon fiber flat clip through extrusion drawing method |
| CN106433109A (en) * | 2016-09-30 | 2017-02-22 | 江苏旭华圣洛迪建材有限公司 | Preparation method of cellulose fiber reinforced thermoplastic particle |
| CN107378754A (en) * | 2017-07-13 | 2017-11-24 | 山东钢铁股份有限公司 | A kind of chamfering machine spiral enters steel device |
| CN110281550A (en) * | 2019-07-05 | 2019-09-27 | 天津工业大学 | A kind of preparation method that weaving continuous fiber reinforced thermoplastic prepreg tape and product |
| CN112848389A (en) * | 2020-12-21 | 2021-05-28 | 中南大学 | Method for rapidly forming hybrid fiber reinforced thermoplastic composite structure |
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| CN105086422A (en) * | 2015-08-31 | 2015-11-25 | 贵州省材料产业技术研究院 | Long glass fiber reinforced TPU non-slip soles and preparation method thereof |
| CN106433109A (en) * | 2016-09-30 | 2017-02-22 | 江苏旭华圣洛迪建材有限公司 | Preparation method of cellulose fiber reinforced thermoplastic particle |
| CN106393742A (en) * | 2016-11-07 | 2017-02-15 | 广东亚太新材料科技有限公司 | Method for preparing thermoplastic carbon fiber flat clip through extrusion drawing method |
| CN106393742B (en) * | 2016-11-07 | 2018-03-27 | 广东亚太新材料科技有限公司 | A kind of method that the flat shell fragment of thermoplastic carbon fiber is prepared with ironing |
| CN107378754A (en) * | 2017-07-13 | 2017-11-24 | 山东钢铁股份有限公司 | A kind of chamfering machine spiral enters steel device |
| CN107378754B (en) * | 2017-07-13 | 2023-12-01 | 山东钢铁股份有限公司 | Spiral steel feeding device of chamfering machine |
| CN110281550A (en) * | 2019-07-05 | 2019-09-27 | 天津工业大学 | A kind of preparation method that weaving continuous fiber reinforced thermoplastic prepreg tape and product |
| CN112848389A (en) * | 2020-12-21 | 2021-05-28 | 中南大学 | Method for rapidly forming hybrid fiber reinforced thermoplastic composite structure |
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